MEMS-BASED ZOOM LENS SYSTEM

摘要

The present application provides a micromechanical (MEMS) based zoom lens system, for use in miniature device applications, such as miniature electronic imaging devices. The MEMS-based zoom lens system comprises at least four optical elements, or two Alvarez or Lohmann lenses, that are configured for passage of optical signals therethrough along an optical signal path. Each optical element is MEMS-driven and displaceable in a direction substantially transverse to the optical signal path. In use, the transverse displacement of the optical elements vary an overall focal length of the MEMS zoom lens system such as to provide an optical zoom function. A method of manufacturing a MEMS zoom lens system is also provided in a further aspect.

主权项

1. A zoom lens system comprising:
at least one micromechanical (MEMS) actuator configured to displace one or more optical elements; at least four MEMS-driven optical elements, each of the at least four MEMS-driven optical elements configured for passage of optical signals therethrough along an optical signal travel path, each of the at least four MEMS-driven optical elements including at least one free-form surface, the at least four MEMS-driven optical elements positioned in a pair-wise configuration such that a first and a second MEMS-driven optical elements form a first pair of optical elements and a third and a fourth MEMS-driven optical elements form a second pair of optical elements, each of the at least four MEMS-driven optical elements displaceable in a direction substantially transverse to the optical signal travel path to allow a change in optical power of one or both of the first and second pair of optical elements.